Detectives are investigating an attack on two other people in the same London street where a woman was believed to have been beheaded.
Police said that they believed both were able to get out of a house in Nightingale Road, Edmonton without injury.

Commander Simon Letchford said officers were called at 1pm this afternoon to reports of a man carrying knife.
He said: "During the arrest officers did discharge tasers and at least one firearms officer has been injured with we believe a broken wrist."